I think it’s A, but D seems similar. Assuming C is wrong, it might be B
Answer:
35.7 g of NH₄Cl
Explanation:
The reaction is:
Al(NO₂)₃ + 3NH₄Cl → AlCl₃ + 3N₂ + 6H₂O
Ratio is 3:1. 3 mol of ammoium chloride react to produce 1 mol of chloride
We convert the mass of ammoium chloride to moles:
43 g . 1 mol/ 53.45 g = 0.804 moles
(0.804 . 1) / 3 = 0.268 moles of AlCl₃ are formed
Let's convert the moles to mass → 0.268 mol . 133.33 g/1mol = 35.7 g
The solution with the lowest pH would mean that it is an acid, specifically a strong acid which completely dissociates into ions in aqueous solution. Among the choices listed above, I think the correct answer is option D. It is nitric acid that will have the lowest pH because it is the only strong acid in the group
Answer:
4,2,1,3
Explanation:
4. A small ribosomal subunit binds to a molecule of mRNA5. the anticodon of an incoming aminoacyl tRNA base-pairs with the complementary mRNA codon in the A site.
2. The large ribosomal subunit attaches with the initiator tRNA with the amino acid methionine (Met) located in the P site.
1. The ribosome translocates the tRNA in the A site to the P site and the empty tRNA in the P site is moved to the E site where it is released.
3. A release factor, a protein shaped like an aminoacyl tRNA, promotes hydrolysis and releases the polypeptide.
